Is there legislative authority to vary a final order by way of an interim order?

She also submits that there is no legislative authority to vary a final order by way of an interim order, which is what the father is requesting. In fact, as noted in Hayes v. Hayes, [1] there are two lines of authority: "One based on the principle that there is no expressed statutory authority to permit an interim order to be made to vary a final order pending a hearing to vary that final order. The second line of cases finds that such authority exists in cases of clear hardship."